Transmission mechanism.



A. PUSTERLA. TRANSMISSION MECHANISM. APPLIOATION FILED JUNE 28, 1909. 950,055. Patented. Feb. 22, 1910.

2 SHEETS-SHEET 1 A. PUSTERLA.

TRANSMISSION MECHANISM.

APPLICATION FILED JUNE 28. 1909. 950,055 Patented. Feb. 22, 1910.,

2 SHEETS-SHEET 2.

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ATTILIO PUSTEBLA, OF BATHBEACH, NEW YORK, ASSIGNOR OF ONE-HALF TO SAMUEL SCHENKEIN, OF NEW YORK, N. Y.

TRANSMISSION MECHANISM.

To all whom it may concern:

Be it known that 1, Amino PUSTERLA, a citizen of the United States, residing at Bathbeach, Long Island, New York, have invented certain new and useful Improvements in Transmission Mechanism; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to power transmission mechanism and has for its object to provide means for gradually transmitting the speed of the power shaft to the driven shaft thereby overcoming the sudden starting and jerking incident in many mechanisms of this character.

With this object in View the invention consists .of a power transmission member such as a sprocket, pulley or gear surrounding the power shaft and yieldingly held eccentric thereto, said power transmission member being positively connected with the driven shaft, by any appropriate mechanism and frictionally connected with the power shaft by means of a conical driving member slidably mounted on, rotatable with and concentric to the power shaft, means being provided to yieldingly hold the transmission member eccentric to the power shaft so that the increasing periphery of the cone may be brought into engagement with the interior periphery of said power transmission member.

The invention consists also in details of construction and combination of parts as hereinafter more particularly set forth and then specified in the claims.

In the accompanying drawings: Figure l is a side elevation of a power transmission mechanism illustrating one form of power transmission member and means for connecting the same with the driven member. Fig. 2 is a longitudinal vertical section on the line 2-2 of Fig. 1. Fig. 3 is a side elevation of a modified form of transmission member and mechanism for connecting the same with the member to be driven.

Referring particularly to said drawing, the power shaft 1 is connected at one end in any suitable manner with any approved Specification of Letters Patent.

Application filed June 28, 1909.

Patented Feb. 22, 1910.

Serial No. 504,876.

form of motor, not shown, and is journaled at its other end in a sleeve 2 which is mounted in a stationary standard 8. The sleeve 2 may be rotated in the standard by means of a hand wheel 4 and moved longitudinally by peripheral screw threads 2 working in threads formed in the bearing 8 of the standard. The shaft 1 is preferably made rectangular in cross section, except at its journal end, for the purpose of serving as a slide-way for a conical driving member 5, which has an internal sleeve 5" conforming to the configuration of the shaft. The conical member may, however, be splined on the shaft or connected thereto in any other suitable manner to permit longitudinal movement of said member and to insure its rotation with the shaft. The longitudinal movement of the conical member is effected by the sleeve 2, which is connected to said conical member in a manner to permit independent rotation of the two parts, said connection being preferably formed by means of an annular flange 2 formed on the sleeve 2 and projecting between a flange 5 and shoulder 5 formed on one end of the sleeve 5.

Surrounding the conical driving member 5, is a transmission or driven member 6, which may consist of a sprocket wheel, as shown in Fig. 1, having one or more rows of peripheral teeth, as 6, or a lateral belt surface 6", or both; or, as shown in Fig. 3, it may consist of a bevel gear, as 6. The transmission or driven member 6 is mounted in a slide, which consists of two plates, 7 7, each having a semicircular recess in one edge, so that when the plates are secured together by bolts 8 taking through flanges 7 the plates surround the driven member. The semi-circular edges are grooved and cooperate with a groove 6 formed in the center of the periphery of the member 6 to form a raceway for anti-friction bearing balls. The plates 7, 7, are slidably mounted on parallel guide-rods 9, 9, fixed transversely to the shaft 1 in brackets 10 and 11, and between one end of the plates and the brackets 10 are interposed springs 12 which surround the guide rods 9, and have a tendency to hold the plates away from said brackets 10 and to yieldingly hold the transmission or driven member 6 into contact with the conical driving member 5.

As shown in Fig. 1, the transmission or driven member 6, is connected by a sprocket chain 13, with a sprocket-wheel 14 fixed 'on the shaft 15 to be driven, which latter is journaled in a fixed standard 16. The chain 13 is kept taut, irrespective of the relative distance between the member 6 and the sprocket 14, by means 'of an idle sprocket wheel 17 which is journaled in a standard 18 slidably mounted in a socket 19 situated between said member 6 and sprocket 13; the sprocket 17 being yieldably held against the chain by the action of a coiled spring 20 surrounding the standard.

As previously stated, the transmission member 6 is held in constant contact with the conical member by the action of the springs 9, and when the member 5 is in the position shown in Fig. 2, the smallest portion of the latter is in engagement with the member 6, hence the speed of the driven shaft will be much slower than that of the power shaft. It will readily be seen that the speed of the member 6 and, consequently, that 'of the driven shaft, may be gradually increased and finally brought to the speed of the power shaft by moving the member 5 through the member '6, as indicated in dotted lines,"whi'ch movement is effected by rotating the sleeve 2 by means of the hand wheel 1.

In the modification shown in Fig. 3, the transmission member consists of a bevelgear 6 mounted in slide-plates 7 in the same manner as the member 6, said plates being substantially like the plates 7. In this instance the rotation of member 6 is transmitted to a shaft 15 through the medium of a bevel-gear 21 and shaft 22; the gear 21 meshing with the member 6 is fixed on the shaft 22 which is journaled in a bearing 22 on one of the slide plates,-and said shaft 22 is connected to and moved longitudinally with the slide plates by a collar 24 fixed to the shaft, and the hub of the gear 21 engaging the bearing 23. A telescoping connection is formed between shafts 15 and 22, and they are caused to rotate together, preferably by forming the outer periphery of shaft 22 and the bore of shaft 15 rectangular in cross section.

The conical driving member 5, in Fig. 3, is constructed and operated the same as that hereinbefore described, so that when said member 5 is moved through the member 6 a lateral movement is imparted to the latter and to the slide plates 7 causing the shaft 22 to slide within shaft 15:

I claim- 1. In a transmission mechanism, a rotatable axially slidable driving member, a slide movable transversely to and operable by the latter and an annular drivenfmember mounted in the slide and surroundin the driving member.

2. In a transmission mechanism, a rotatable axially slidable conical driving member, a slide movable transversely to and operable by the latter, and an annular driven member mounted in the slide and surrounding the driving member.

3. In a transmission mechanism, a rotatable axially slidable conical driving member, a slide movable transversely to the latter, an annular driven member rotatable in the slide and surrounding the conical member, and means to yieldingly hold the annular member eccentric to the conical member.

4:. In a transmission mechanism, a rotatable axially slidable conical driving member, a slide movable transversely to and automatically operable by the latter, an annular driven member rotatable in the slide and surrounding the conical member, a driven shaft, and means to connect the latter with the annular member.

5. In 'a transmission mechanism, a rotatable axially slidable conical driving member, a slide movable transversely to the latter, an annular driven member rotatable in the slide and surrounding the conical member, a driven shaft, means to connect the latter with the annular member and means to yieldingly hold the annular driven member eccentric to the conical member.

6. In a transmission mechanism, a conical driving member, a drivenmember, an annu-- la-r friction member surrounding the driving member and movable by the latter trans versely thereto, a driving connection between the friction and driven members, and means to compensate for the movement of the friction member. 7

7 In a transmission mechanism, a power shaft, a conical driving member slidable thereon and rotatable therewith, a driven member, a slide movable transversely to the power shaft, an annular driven member rotatable in the slide and surrounding the conical member, means to connect the annular member and driven member, and means to yieldingly hold the annular member eccentric to the power shaft.

8. In a transmission mechanism, a power shaft, a conical driving member slidable thereon and rotatable therewith, guide rods mounted transversely of the shaft, plates slidably mounted on the guide rods having a semi-circular grooved recess in their edges, an annular transmission member mounted in said recesses and havinga grooved periphery registering with the aforesaid grooves forming a race-way, mounted in the race-way, and means to yieldingly press the transmission member-against the conical member.

9. In a transmission mechanism, the com-= bination with a fixed bearing having internal screw-threads; of a sleeve ournaled therein having peripheral screw-threads engaging.

anti-friction balls member having an internal bearing sleeve In testimony that I claim the foregoing slidably mounted on the shaft and rotatable as my invention, I have signed my name in 10 therewith and lfilaving an end 1flange engaged I presence of two subscribing Witnesses.

b an annular an e on the s eeve an annula r transmission ihember surrounding the ATTILIO PUSTERLA' conical member, and means to yieldingly Witnesses:

mount the transmission member to move PLACIDO M0121,

transversely to the conical member. JAs. F. OARAGUARO. 

